Drenaż subglacjalny lądolodu skandynawskiego (Polska NW) w świetle modelowania numerycznego

• Autorzy: Piechota A. M. , Piotrowski J. A.

Warianty tytułu

EN

Subglacial drainage of the Scandinavian Ice Sheet (NW Poland) from numerical modelling

• Języki publikacji: PL

Abstrakty

PL

W niniejszym artykule autorzy przedstawiają wyniki badań nad drenażem subglacjalnym lądolodu skandynawskiego podczas maksymalnego postoju w fazie poznańskiej i pomorskiej vistulianu w Polsce NW. Podczas numerycznychsymulacji dwuwymiarowychi trójwymiarowychprzepływu wód podziemnychpod lądolodem stwierdzono, że tworzyły się znaczne nadwyżki wód subglacjalnychna kontakcie lód-podłoże. Zaledwie od około 15-25% wód subglacjalnychbyło w stanie wpłynąć pod stopę lądolodu jako wody podziemne. W symulacjachdla warunków ustalonychwody te wpływały na głębokość około 220 m, często nie przekraczając jednak wartości 100 m, osiągając średnie prędkości około 110 m/rok.

EN

Here we present the results of research on subglacial drainage of Scandinavian Ice Sheet during Poznan and Pomeranian phases of Weichelian glaciation in NW Poland. On the basis of two- and three-dimensional numerical simulation of groundwater flow under the ice sheet it is suggested that a surplus of subglacial water at the ice-bed interface occurred. Only about 15–25% of subglacial water had been able to drain through the bed as groundwater. In steady-state simulations, this water penetrated the bed to the depth of approximately 220 m but often not exceeding the value of 100 m, and reached an average flow velocity of approximately 110 m/year.

Słowa kluczowe

PL

drenaż subglacjalny; vistulian; modelowanie numeryczne

EN

subglacial drainage; Weichelian glaciation; numerical modelling

• Wydawca: Stowarzyszenie Geomorfologów Polskich
• Czasopismo: Landform Analysis
• Rocznik: 2010
• Tom: Vol. 13
• Strony: 91--106
• Opis fizyczny: Bibliogr. 61 poz., rys.

Twórcy

autor

Piechota A. M.

autor

Piotrowski J. A.

• Uniwersytet Śląski, Wydział Nauk o Ziemi, ul. Będzińska 60, 41-200 Sosnowiec,

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